NEW
Font size
S
M
L
XL
WorksheetsElectric Current
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
What is the unit of electric current?
a)
Volt
b)
Ohm
c)
Ampere
d)
Watt
2.
Which of the following defines voltage?
a)
The rate of flow of charge
b)
The opposition to current flow
c)
The difference in electric potential between two points
d)
The energy used per unit of charge
3.
What does resistance measure in an electrical circuit?
a)
The amount of current flowing
b)
The difference in voltage
c)
The opposition to the flow of current
d)
The total energy consumed
4.
According to Ohm's Law, what happens to the current if the resistance increases, assuming voltage is constant?
a)
Current increases
b)
Current decreases
c)
Current remains the same
d)
Current fluctuates
5.
Which of the following materials is typically an insulator?
a)
Copper
b)
Aluminum
c)
Rubber
d)
Iron
6.
In which type of circuit is the total resistance equal to the sum of the individual resistances?
a)
Parallel Circuit
b)
Series Circuit
c)
Complex Circuit
d)
Short Circuit
7.
What is the unit of resistance?
a)
Volt
b)
Ampere
c)
Ohm
d)
Watt
8.
What happens to the total resistance in a parallel circuit when more resistors are added?
a)
It increases
b)
It decreases
c)
It remains the same
d)
It doubles
9.
Which device is used to measure the voltage across a component?
a)
Ammeter
b)
Voltmeter
c)
Ohmmeter
d)
Galvanometer
10.
What is the purpose of a fuse in an electrical circuit?
a)
To store charge
b)
To measure current
c)
To protect the circuit from overload
d)
To increase resistance
11.
Which of the following defines electric power?
a)
The rate of energy consumption or generation
b)
The amount of charge flowing per second
c)
The opposition to current flow
d)
The difference in potential energy
12.
Which material is commonly used as a conductor in electrical wiring?
a)
Wood
b)
Plastic
c)
Copper
d)
Glass
13.
What is a short circuit?
a)
A circuit with very high resistance
b)
A circuit where current flows through an unintended low-resistance path
c)
A circuit with no resistance
d)
A circuit with no current flow
14.
What does an ammeter measure?
a)
Voltage
b)
Resistance
c)
Current
d)
Power
15.
In a series circuit, how does the current behave through each resistor?
a)
It decreases through each resistor
b)
It increases through each resistor
c)
It remains the same through each resistor
d)
It splits equally among resistors
16.
What is the relationship between voltage, current, and resistance as described by Ohm's Law?
a)
V = I × R
b)
V = I + R
c)
V = R ÷ I
d)
V = I − R
17.
What is the unit of electric power?
a)
Joule
b)
Watt
c)
Ampere
d)
Volt
18.
In which type of circuit does the voltage remain the same across all components?
a)
Series Circuit
b)
Parallel Circuit
c)
Open Circuit
d)
Short Circuit
19.
What is the function of a battery in a circuit?
a)
To increase resistance
b)
To measure current
c)
To provide energy
d)
To store electrical charge
20.
Which of the following terms describes the flow of electric charge?
a)
Voltage
b)
Resistance
c)
Electric Current
d)
Power
21.
What is the effect of temperature on the resistance of a typical conductor?
a)
Resistance decreases as temperature increases
b)
Resistance increases as temperature increases
c)
Resistance remains constant
d)
Resistance fluctuates randomly
22.
How is total current in a parallel circuit determined?
a)
By adding the currents through each branch
b)
By subtracting the smallest current from the largest
c)
By multiplying the currents through each branch
d)
By averaging the currents through each branch
23.
Which component is designed to control the flow of current in a circuit?
a)
Fuse
b)
Switch
c)
Resistor
d)
Battery
24.
If the voltage across a conductor is tripled, what happens to the current, assuming resistance is constant?
a)
It triples
b)
It doubles
c)
It decreases by one-third
d)
It remains the same
25.
What is the formula for calculating electrical energy?
a)
E = V × I × t
b)
E = V + I
c)
E = V ÷ I × t
d)
E = I × R × t
Reset
